including at&t, verizon, t mobile, sprint, all the big ones report that authorities are asking for data, including cell phone locations, wiretaps, even your text messages. the requests, we're told, come in every single day. the company has reportedly fielded more than 1 million of those requests just last year. a jumple of roughly 15% from the year before. now we're told investigators sometimes targeted 1 particular suspect. other times they asked for a data dump as they call it, demanding information about any person who used his or her cell phone at a certain location. a lot of privacy concerns. our chief fox report correspondent jonathan hunt with this story. it's those data dumps, jonathan, that could be the biggest concern among the privacy advocacy groups. >> yeah, because in the words of democratic congressman ed markey who first requested this information from the cell phone carrier, shep, when investigators do that, they are looking for a needle but they are effectively getting a whole hay stack of information from potentially millions of cell phone users.